@lilgee34 It’s failing on every Mac browser I tested. There is a JavaScript error in the console that implies a problem with the popup content being generated by the server.
[Log] SyntaxError: JSON Parse error: Unexpected EOF (wp-terms-popup-ajaxhandler.js, line 25)
[Log] SyntaxError: JSON Parse error: Unexpected EOF (wp-terms-popup-ajaxhandler.js, line 49)
Four things I would suggest trying:
#1. Try disabling the “Load popups with JavaScript?” setting in WP Terms Popup and see if that makes the popup show.
#2. Create a new popup with a simple title and body and see if you can get that to work. Maybe something in the content of the current popup is causing an issue.
#3. There’s possibly a conflict with another plugin. The best way to test for that is tedious: disable plugins individually and test to see if you can pinpoint the problem.
#4. Check your server’s PHP logs for any clues.
This is tough for me to diagnose, so I’m sorry I can’t offer a better solution at the moment without more information.